CVE-2023-5356 | THREATINT

Description

Incorrect authorization checks in GitLab CE/EE from all versions starting from 8.13 before 16.5.6, all versions starting from 16.6 before 16.6.4, all versions starting from 16.7 before 16.7.2, allows a user to abuse slack/mattermost integrations to execute slash commands as another user.

PUBLISHED Reserved 2023-10-03 | Published 2024-01-12 | Updated 2025-11-20 | Assigner GitLab

HIGH: 7.3CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N

Problem types

CWE-863: Incorrect Authorization

Product status

Default status

unaffected

8.13 (semver) before 16.5.6

affected

16.6 (semver) before 16.6.4

affected

16.7 (semver) before 16.7.2

affected

Credits

Thanks [yvvdwf](https://hackerone.com/yvvdwf) for reporting this vulnerability through our HackerOne bug bounty program finder

References

gitlab.com/gitlab-org/gitlab/-/issues/427154 (GitLab Issue #427154) issue-tracking

hackerone.com/reports/2188868 (HackerOne Bug Bounty Report #2188868) technical-description exploit

gitlab.com/gitlab-org/gitlab/-/issues/427154 (GitLab Issue #427154) issue-tracking

hackerone.com/reports/2188868 (HackerOne Bug Bounty Report #2188868) technical-description exploit permissions-required

cve.org (CVE-2023-5356)

nvd.nist.gov (CVE-2023-5356)

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